Env Slop or Envelope Slop is a unique feature that adds per-voice differences into the ADSR envelope lengths — some notes end up longer, other notes will be shorter.

At low settings, it’s good for adding subtle variety.

At high settings, it’s great for dynamic humanized arpeggios.

This is especially nice for patches with high amount of unison voices and when arpeggiating notes or harmonics via Trem. Because the envelopers are per-harmonic, it adds interesting variations, not only in overall note timing but in note timbre.

Behind the scenes, each Sine Machine voice has a hand-selected hard-coded “slop multiplier” that gets applied when you turn up Env Slop.

Each fixed Sine Machine voice has its own max “slop multiplier” value

The slop multipliers are per-voice (not per-note or unison group or note or other mechanism). The far left voice will always have a slop value of (for example) 1.096

Envelope Slop replicates analog synth behavior where each “voice card” has minor differences and always “off” by the same amount. It follows the “lookup table” method talked about here: https://www.voicecomponentmodeling.com/


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